Comment 3 for bug 1755155

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John A Meinel (jameinel) wrote :

The bug in question is bug #1697936

Essentially, there was an issue between 2.1 and 2.2 which only seems to trigger if your charm has a large config. I believe the issue we encountered it with was nova-compute which shares a certificate with keystone, which can be fairly large.

I do believe the agents can be upgraded even if they are in error. It may require running "juju resolved", but I believe Upgrade supersedes running hooks.

I don't know why you wouldn't have seen it in staging, but maybe you aren't using SSL there? (And thus not generating certificates which then increases the size of relation-data/config?)

I don't believe that --dry-run will tell you much more than what version it would want to upgrade to.